Sand-bag filter



FIG. 1 is a front side view for a sand-bag filter showing my new design;

FIG. 2 is a top side view thereof;

FIG. 3 is a bottom side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a rear side view thereof.

CLAIM The ornamental design for a sand-bag filter, as shown anddescribed.